== sanity test 101b: check stride-io mode read-ahead =========================================================================== 16:24:32 (1777580672)
striped dir -i1 -c2 -H fnv_1a_64  /mnt/lustre/d101b.sanity

1.546808s, 5.42317MB/s
Read-ahead success for size 8192

1.669557s, 5.02445MB/s
Read-ahead success for size 16384

1.619263s, 5.18051MB/s
Read-ahead success for size 32768

1.556590s, 5.38909MB/s
Read-ahead success for size 65536

1.383426s, 6.06365MB/s
Read-ahead success for size 131072

1.261989s, 6.64713MB/s
Read-ahead success for size 262144

1.325164s, 6.33024MB/s
Read-ahead success for size 524288

1.257002s, 6.6735MB/s
Read-ahead success for size 1048576